It happened about 3:45 a.m. in a room that houses electrical equipment at the hotel and water park, Grapevine fire officials said.

Crews found smoke in the foyer and evacuated guests as a precaution.

"The fire response system at Great Wolf Lodge sounded this morning due to an isolated electrical issue which generated some smoke on the second floor of the resort," the resort said in a statement Tuesday afternoon. "All guests and pack members were evacuated until the local fire department could investigate. The fire department has cleared the building and all guests have returned to the resort."

Great Wolf spokesman Jason Lasecki said the incident was due to a "smoking electrical panel with no flames and no fire damage."

No injuries were reported. Guests were allowed to return to their rooms around 4:45 a.m.

Damon King, whose family was visiting from Oklahoma City, said the evacuation was calm and orderly.

"It's like a big block party almost," he said as he waited for the OK to return to his room.

Several other departments aided in extinguishing the fire, including Southlake, Keller, Westlake, Euless, Coppell, Flower Mound, Lewisville and Colleyville.

Loyd Brumfield, Breaking News producer. Loyd has covered breaking news for The Dallas Morning News since 2017. A native of Southeast Texas, he has been with The Dallas Morning News since 2007 and has worked in multiple roles: communities editor, communities reporter and breaking news producer.